Use the scientific calculator in Windows 10 - Microsoft Support
https://support.microsoft.com/en-gb/windows/use-the-scientific-calculator-in-windows-10-e53b404e-9223-5e99-4c54-5dc8645552ab
WEBWindows 10. The Calculator app for Windows 10 is a desktop calculator that includes standard, scientific, programmer, and date calculation modes. Scientific mode is typically used for more complex math functions like trignometry, exponents, and logarithms. To use scientific mode: Select the Start button, then choose Calculator from the apps list.
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